1 Port USB to RS232 DB9 Serial Adapter with Detachable 6ft USB A to B Cable

Add an RS232 serial port to your laptop or desktop computer through a detachable USB cable

Product ID: ICUSB232D

0 stars (0 reviews) |
  • Provides USB to straight-through RS232 serial connectivity
  • Detachable USB cable design (6ft / 1.8m USB A-B cable included)
  • Supports baud rates up to 128Kbps
Your price
€18,99 EUR excl. VAT
€22,98 EUR incl. VAT

The ICUSB232D 1 Port USB to Serial Adapter lets you add an RS232 DB9 serial port to your laptop or desktop computer through USB, so you can connect to, monitor and control a serial device. For easy connections, the adapter features a female USB type-B port, so you can choose the length of USB cable needed to reach your serial device (6ft / 1.8m USB A-B cable included).

The USB to RS232 adapter is a convenient and cost-saving solution for providing legacy serial connectivity to devices such as point-of-sale terminals, serial modems, industrial equipment and a wide variety of other RS232 peripherals.

The USB to serial converter is easy to install and offers broad operating system compatibility including Windows®, Mac OS® and Linux for easy integration into mixed environments, and offers support for transfer rates up to 128 Kbps.

Backed by a StarTech.com 2-year warranty and free lifetime technical support.

Applications

  • Add legacy functionality to newer notebooks, PCs and servers that lack an integrated RS232 port
  • Connect bar code scanners, receipt printers and other point of sale devices
  • Connect, monitor and control industrial/automotive sensors and other sensitive equipment
  • Connect and program LED and digital signage boards

The StarTech.com Advantage

  • Choose the cable length needed to reach your device, with the detachable USB cable design
  • Install on almost any laptop or desktop system, through broad operating system compatibility including Windows, Mac OS and Linux
  • Portable and lightweight, the USB-powered design requires no additional power adapter

Partner Numbers

  • Ingram Micro Belgium 2842828
  • Tech Data - Belgium 4428291
  • UPC 065030859448

Compatibility

  • Windows 8 logo
  • Windows 10 logo
  • Windows 7 logo
  • macOS Sierra (10.12) logo
  • Windows Server 2012 logo
  • Linux logo
  • macOS Mojave (10.14) logo
  • Windows Server 2016 logo
  • Windows Server 2019 logo
  • macOS High Sierra (10.13) logo
  • macOS Catalina (10.15) logo
  • macOS Big Sur (11.0) logo
Windows® XP, Vista, 7, 8, 8.1, 10
Windows Server® 2003, 2008 R2, 2012, 2016, 2019
macOS 10.6 to 10.15, 11.0
Linux 3.5.x to 4.11.x LTS Versions only

Specifications

Warranty Information Warranty 2 Years
Connector(s) 1 - Connector Type(s) USB B (4 pin)
DB-9 (9 pin, D-Sub)
Environmental Operating Temperature 0°C to 70°C (32°F to 158°F)
Storage Temperature -10°C to 80°C (14°F to 176°F)
Humidity 5~95% RH (Non-Condensing)
Hardware Ports 1
Interface Serial
Bus Type USB 2.0
Port Style Cable Adapters
Industry Standards USB 2.0/1.1
RS232
Chipset ID Prolific - PL2303TA
Packaging Information Package Height 33 mm [1,3 in]
Package Length 14,3 cm [5,6 in]
Shipping (Package) Weight 201 g [7,1 oz]
Package Width 17,3 cm [6,8 in]
Performance Serial Protocol RS-232
Max Baud Rate 128 Kbps
Data Bits 5, 6, 7, 8
FIFO 512 Bytes
Flow Control None, Xon/Xoff, RTS/CTS, DCD/DTR/DSR
Parity None, Odd, Even, Mark, Space
Stop Bits 1, 1.5, 2
Physical Characteristics Weight of Product 34 g [1,2 oz]
Color Black
Material Plastic
Cable Length 1,8 m [6,0 ft]
Product Length 59 mm [2,3 in]
Product Width 32 mm [1,3 in]
Product Height 22 mm [0,9 in]
Power Power Source USB-Powered
Software OS Compatibility Windows® XP, Vista, 7, 8, 8.1, 10
Windows Server® 2003, 2008 R2, 2012, 2016, 2019
macOS 10.6 to 10.15, 11.0
Linux 3.5.x to 4.11.x LTS Versions only
Special Notes / Requirements System and Cable Requirements Available USB 1.1 (or above) port
What's in the Box 1 - Included in Package USB to RS232 Adapter
6ft USB Cable - A to B
Driver CD
Instruction Manual

Accessories

USB2HAB15

15 ft USB 2.0 A to B Cable - M/M

Connect USB 2.0 peripherals to your computer

Your price
€5,99 EUR excl. VAT
€7,25 EUR incl. VAT
USB2HAB10

10 ft USB 2.0 Certified A to B Cable - M/M

Connect USB 2.0 peripherals to your computer

Your price
€4,99 EUR excl. VAT
€6,04 EUR incl. VAT
USB2HAB65AC

20m / 65 ft Active USB 2.0 A to B Cable - M/M

Extend the distance between your USB 2.0 devices by up to 65ft

Your price
€45,99 EUR excl. VAT
€55,65 EUR incl. VAT
USB2HAB50AC

15m / 50 ft Active USB 2.0 A to B Cable - M/M

Connect USB 2.0 devices up to 50ft away, with no signal loss

Your price
€39,99 EUR excl. VAT
€48,39 EUR incl. VAT
USB2HAB30AC

9 m (30 ft.) Active USB 2.0 A to B Cable

USB A to B Cord | Male to Male | Black

Your price
€25,99 EUR excl. VAT
€31,45 EUR incl. VAT
USB2HAB2RA3

3 ft A Right Angle to B Right Angle USB Cable - M/M

Connect USB 2.0 peripherals to your computer, for installation in narrow spaces

Your price
€4,99 EUR excl. VAT
€6,04 EUR incl. VAT
USBAB3ML

3m USB 2.0 A to Left Angle B Cable - M/M

Connect hard-to-reach USB 2.0 peripherals, for installation in narrow spaces

Your price
€4,99 EUR excl. VAT
€6,04 EUR incl. VAT
MXT1003MBK

3m Black Straight Through DB9 RS232 Serial Cable - M/F

Extend the connection between your DB9 serial devices by up to 3m

Your price
€5,99 EUR excl. VAT
€7,25 EUR incl. VAT
MXT1002MBK

2m Black Straight Through DB9 RS232 Serial Cable - M/F

Extend the connection between your DB9 serial devices by up to 2m

Your price
€4,99 EUR excl. VAT
€6,04 EUR incl. VAT
MXT10050CMBK

0.5m Black Straight Through DB9 RS232 Serial Cable - M/F

Extend the connection between your DB9 serial devices by up to 0.5m

Your price
€2,99 EUR excl. VAT
€3,62 EUR incl. VAT
MXT10010

10 ft Straight Through Serial Cable - M/F

Extend your EGA monitor cable or mouse cable by 10ft

Your price
€4,99 EUR excl. VAT
€6,04 EUR incl. VAT
MXT1003

3 ft Straight Through Serial Cable - DB9 M/F

Extend the connection between your DB9 serial devices by up to 3ft

Your price
€2,99 EUR excl. VAT
€3,62 EUR incl. VAT

Drivers/Downloads

Talk to an Advisor

We are always ready to assist you with any questions you may have.

Live Chat (opens in new window)

Driver(s):

Manual(s):

Datasheet

Product Support

Talk to an Advisor

We are always ready to assist you with any questions you may have.

Live Chat (opens in new window)

Frequently Asked Questions

Installation

Starting in High Sierra 10.13, macOS enforces stricter security policies than previous revisions. As a result of these changes, software packages, like those used in this installation, will need to be allowed within the macOS Security and Privacy settings, immediately after the software has been installed, in order for the device to operate.

To allow the software, follow these steps after you've completed installation on your Mac:

  1. Open System Preferences.
  2. Open Security & Privacy.
  3. Click the Allow button near the bottom of the General tab.

Note: The option to allow the software will be available within the Security & Privacy settings for 30 minutes. If the software is not allowed within that time frame, the software must be reinstalled in order for macOS to grant the opportunity to allow it again.

Some driver installation packages may require you to disable driver signature enforcement in Windows 8, which will allow unsigned driver packages to be installed on your system.

Note: Before you continue, save any open documents and close all open programs.

To disable driver signature enforcement, complete the following:

  1. Press the Windows key + C.
  2. Click Settings > Change PC Settings.
  3. In the left pane, click General.
  4. In the right pane, under Advanced startup, click Restart now.

When your system finishes restarting, complete the following:

  1. Click Troubleshoot > Advanced options > Startup Settings > Restart.
  2. Press 7.

When your computer restarts, driver signature enforcement will be disabled and you can install your drivers.

Note: When you restart your computer after you install your drivers, driver signature enforcement will be enabled again. This does not prevent your newly installed drivers from working, but does prevent any other unsigned drivers from being installed until driver signature enforcement is disabled.

Some driver installation packages may require you to disable driver signature enforcement in Windows 8.1, which will allow unsigned driver packages to be installed on your system.

Note: Before you continue, save any open documents and close all open programs.

To disable driver signature enforcement, complete the following:

  1. Press the Windows key + C.
  2. Click Settings > Change PC Settings.
  3. In the left pane, click Update & Recovery.
  4. In the left pane, click Recovery.
  5. Under Advanced startup, click Restart now.

When your system finishes restarting, complete the following:

  1. Click Troubleshoot > Advanced options > Startup Settings > Restart.
  2. Press 7.

When your computer restarts, driver signature enforcement will be disabled and you can install your drivers.

Note: When you restart your computer after you install your drivers, driver signature enforcement will be enabled again. This does not prevent your newly installed drivers from working, but does prevent any other unsigned drivers from being installed until driver signature enforcement is disabled.­­­­­­­

You may need to disable Driver Signature Enforcement in Windows 10 to use some driver installation packages. When you disable this feature, you can install unsigned driver packages on your computer.

Note: Before you continue, save any open documents and close all of your programs. You will need to restart your computer to disable Driver Signature Enforcement.

To disable Driver Signature Enforcement, complete the following:

  1. Click the Windows icon in the taskbar.
  2. Click Power.
  3. Press and hold the Shift key and click Restart.

After your computer finishes restarting, complete the following:

  1. Click Troubleshoot Advanced Options Startup Settings > Restart.
  2. Press 7.   

When your computer finishes restarting, Driver Signature Enforcement will be disabled and you can install the drivers.

Note: When you restart your computer after you install your drivers, driver signature enforcement will be enabled again. This does not prevent your newly installed drivers from working, but does prevent any other unsigned drivers from being installed until driver signature enforcement is disabled.­­­­­­­

Prior to installing this device, ensure that your operating system is up to date (for example, you have installed the most recent service pack).

To install the driver:

  1. Download the latest drivers from the StarTech.com website (http://www.startech.com/Support). You can find the part number and product ID on the product’s packaging.

Note: Windows will typically save the files to the Downloads folder that is associated with your user account (for example, C:\Users\your_name\Downloads).

  1. Once the download is complete, right-click the zip folder that you downloaded, select Extract All, and follow the on-screen instructions.
  2. In the list of extracted files, right-click the Setup.exe file and select Run as Administrator.

Note: If the Run as Administrator option is not available, you might be attempting to run the installer from within the zipped file. Extract the files using the instructions in Step 2.

  1. Follow the on-screen prompts to install the device drivers and restart the computer when prompted.
  2. Once Windows has restarted, connect the USB serial adapter to your computer.
  3. Your computer will automatically complete the driver installation and your device should be ready to use.

Prior to installing this device, ensure that your operating system is up to date (for example, you have installed the most recent service pack).

To install the driver:

  1. Download the latest drivers from the StarTech.com website (http://www.startech.com/Support). You can find the part number and product ID on the product’s packaging.

Note: Windows will typically save the files to the Downloads folder that is associated with your user account (for example, C:\Documents and Settings\your_name\My Documents\Downloads).

  1. Once the download is complete, right-click the zip folder that you downloaded, select Extract All, and follow the on-screen instructions.
  2. In the list of extracted files, double-click the Setup.exe file.
  3. Follow the on-screen prompts to install the device drivers and restart the computer when prompted.
  4. Once Windows has restarted, connect the USB serial adapter to your computer.
  5. Your computer will automatically complete the driver installation and your device should be ready to use.

Troubleshooting

Older applications that use serial communication often use legacy hardware addresses that do not work with PCI, PCIe, or USB to Serial products. We recommend contacting the software provider/support team to check if this is the case.

If the USB device does not work after your computer has been in extended hibernation, it is likely that Windows has automatically turned off the USB Root hub to save power. 

The steps below outline how to configure the USB root hub to stay on during hibernation, to prevent this from happening.
 

Windows 10 / 8

  1. On your keyboard, press the Windows key + X and select Control Panel.
  2. Click Hardware and Sound, then click Power Options.
  3. Click Change plan settings for the plan you want to change.
  4. Click Change advanced power settings.
  5. Click the plus sign (+) next to “USB settings” and “USB selective suspend setting” to expand the options and change the setting to Disabled.
  6. Click OK to apply the setting.

Note: You may need to disconnect and re-connect your USB device after applying these settings to re-establish the connection.

Windows 7 / Vista

  1. Click the Start button and select Control Panel.
  2. Click Hardware and Sound, then click Power Options.
  3. Click Change plan settings for the plan you want to change.
  4. Click Change advanced power settings.
  5. Click the plus sign (+) next to “USB settings” and “USB selective suspend setting” to expand the options and change the setting to Disabled.
  6. Click OK to apply the setting.

Note: You may need to disconnect and re-connect your USB device after applying these settings to re-establish the connection.

Windows XP

  1. On your desktop, right-click the My Computer icon and select Properties.
  2. Click the Device Manager tab.
  3. Expand Universal Serial Bus controllers by clicking the arrow to the left of it.
  4. Right-click the first USB Root Hub device and select Properties.
  5. Click the Power Management tab.
  6. Clear the box next to Allow the computer to turn off this device to save power.
  7. Click OK to apply the setting.
  8. Repeat steps 4-7 for any remaining devices in the Universal Serial Bus Controllers section with “Root Hub” in the name.

Note: You may need to disconnect and re-connect your USB device after applying these settings to re-establish the connection.

How To

To confirm that Windows detects your USB device, complete the following:

  1. Press the Windows key+R, type devmgmt.msc, and press Enter.
  2. In Device Manager, under the appropriate heading, confirm that your expansion card is listed and that there isn't an exclamation mark next to it.  For example, a USB controller card would be under Universal Serial Bus controllers.

Your USB device is listed according to the name of the chipset. To determine the name of the chipset of your USB device, navigate to www.StarTech.com and look on the Technical Specifications tab for your product.

To confirm that the Mac OS detects your USB device, complete the following:

  1. Click the Apple icon.
  2. Click About This Mac.
  3. Click More Info or System Report.
  4. Under the appropriate heading, confirm that your USB device is listed and that there isn't an error. For example, a network card would be under Ethernet Cards.

You may need to refresh the System Information page after you plug in your device.  To do so, press Command R with the System Information page open.

Your USB device is listed according to the name of the chipset. To determine the name of the chipset of your USB device, navigate to www.StarTech.com and look on the Technical Specifications tab for your product.

Common Issues

Use a USB to Serial product that features COM Port Retention.  These products will store settings that are unique to the connected device in non-volatile memory, allowing you to retain the desired settings regardless of the USB Port to which the adapter is connected.

Compliance and safety

Compliance letters

  • RoHS
    • Language: English
  • WEEE
    • Language: English

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

Customer Reviews

(0 reviews)
0 out of 5 stars
  • 5 (0)
  • 4 (0)
  • 3 (0)
  • 2 (0)
  • 1 (0)
Tell us what you think of this product.
Need a little help getting started?

Check out our review guidelines.

Feedback Back to top